Device for babbitting connecting rods



Mw 29, 11923; www@ C. ERlCKSON.' JR

DEVICE FOR BABBITTIVNG CONNECTING RODS Filed March 18 .4 1922 Will/WAY Patented May 29, i923..

Ltdtt raras si.

CHARLES ERICKSON, JR.,

OF SCOTIA, CALIFORNIA.

DEVICE FOR BABBITTING- CONNECTING RODS.

Application filed March 18, 1922. Serial No. 544,853.

To all whom t may concern.' Be it known that I, CHARLES ERICKSON,

J r., a citizen of the United States, residing at Scotia, in the county of Humboldt and State of California, have invented certain new and useful Improvements in Devices for Babbitting Connecting Rods, of which the following is a specification, reference being had to the accompanying drawings.

It is the purpose of the present invention to provide an improved mandrel, which is simple, efficient and practical in construction, for babbitting connecting rods, which are used on internal combustion engines.

The ends of connecting rods, which connect with the pistons in the cylinders of internal combustion engines are subject to considerable wear, and in order to take up this wear it is necessary7 to provide a lining on 2o the interior of the ends of therods which connect with the pins of the pistons, in order to insure easy movements -of the connecting rods.

Heretofore there have been devices employed, for babbitting the connecting rods, but such devices are more or less complicated in construction, therefore another purpose is to provide a simple construction, which not only insures a better lining, but also holds the connecting rods firmer, and also permits the babbitt lining to be constructed more uniform, so as to insure easier and better movements of the rods, when in use.

Still another purpose is the provision of simple means for holding the rod in position, and the end of the rod which is to be provided with a babbitt bearing concentric with a supporting pin, while it is receiving 4.0 its babbitt lining.

Furthermore it is the aim to provide means for clamping the rod on the mandrel while it is being supplied with its babbitt bearing.

While the design and construction at present illustrated and set forth are'deemed preferable, it is obvious that as aresultv of a reduction of the invention to a morepractical form for commercial purposes, the invention may be susceptible of changes, and the ae right to these changes is claimed, provided they are comprehended within the scope of what is claimed.

The inventioncomprises further features and combination of parts, as will be hereinafter set forth, shown in the drawings and claimed.

In the drawings Figure l is a longitudinal sectional view through the improved mandrel or device for babbitting connecting rods, showing a connecting rod in position, ready to receive its babbitt lining;

Figure 2 is a plan view;

Figure 3 is a cross sectional view on line 3-3 of Figure 2;

Figure 4 is a cross sectional view on line 4 4 of Figure 2;

Figure 5 is a sectional viewon line 5- of Figure l; o Figure 6 is a sectional view through a larger connecting rod head showing a bushing mounted on the pin 8 to take the excessive or increased size of head.

Referring to the drawings, 1 and 2 designate the base Lmembers of the mandrel, which may be constructed in any suitable manner, and of any suitable material preferably cast iron. These base members may also be any suitable shape, preferably as illustrated, and secured in the base member l by means of the tapered pins 3 are rods 4, which connect the two base members. The rods 4 where they engage longitudinally through the base l are entirely cylindrical, as shown, but the remaining portions of said rods, from one end of the base memberl are flattened as shown at 5. The base member 2 is provided with longitudinally extending bores or openings 6, which, in cross section are shaped correspondingly to the rods 4. Suitable thumb screws are threaded through the base member 2, so that their Shanks will frictionally engage with the flattened surfaces 5 of the rods 4, so as to hold the base member 2 in different adjusted positions on the rods, according to the length of connecting rod to be supplied with a babbitt bearing. The rods 4 are milled to provide the flattened surfaces, so that the rods will not be marred or disiigured by the Shanks of the thumb screws 7 when tightcned.

Pressed or shrunk, or othewise fastened in the base l and centrally thereof is a pin 8, which passes through the bore 9 of the head 10 of a connecting rod 11, to be supplied with a babbitt bearing or'lining. Infact the bore 9 of the head l() of the connecting lari-17 in position.

ing rod 11 to the pin. rlhis collar 12 closely` fits the base of the pinS,v and upon itsupper face is provided with an annular groove ,13.

When the collar 12 is applied to the pin, the

groove registersy with the space between the surface of the pin and the surfaceV of the bore 9, so that when the Babbitt metal enters the space, it will-'flow into the groove, and cause to be formed an overlapping end on the babbitt bushing or bearing, to pre` ment. movement yof the bearing in one direction, when the same hardens;

A second collar 14 is fitted closely to .the upper endy portion of the pin A8, and its under face is provided with an annular groove 15,1 which registers with the space between the pin and the bore 9, and performs the same function as the groove 13. This collar 14 is provided with a pair of openings 16, through either one of whichY the Babbitt metal may be poured, so that it mayventer the space between the pin 8 and ,the bore 9. An additional collar 17 is also ,closely fitted tothe upper extremity of thepin`8, andv lis lsecured thereto by a set bolt 18'. In fact the set bolt 18 is arranged soy that its extremity 19 partly pierces the'pin 8, to insure holding the colf a t A pair of set bolts or screws 2 0 is threaded through the collar 17 perpendicularly, so as to bear upon the collar 14,'jtherebyl forcing the collar 14- toward the head1() of the connecting rod, which in turn is forced against the collar 12, in turn holding thecollar tight against the upper face; ofthe` base 1, thereby preventing any leakage between the parts. j

It ywill be' vnotedk that in babbitting the head 10 ofthe connecting rod, the head is *l engaged upon the pin Ssubsequently to applyingthe collar l2. t The head is then arranged yso that it isexactly concentric with the collar 12, then the collar 14 is applied, andthe parts arec'lamped in position. The collar 17 has'diarnetrically `opposite apertures21, which register. with the apertures 16,fso astoperinit the Babbitt metal to be lpouredthereinta After the parts'are' thus arranged, 4the Babbitt metal is poured through, the apertures- 21, and then' passes throughthe aperturesfor openings 16, intov the groove of the upper collar, then in the space between the' pin 8;y and the bore 9, and thenv in-tothev groove 13. .After the metal hardens, the head 10- can be detached from they pin 8thereby leaving a. babbitt lining or bearing constructed 'within the head, the

endsl of thebabbitt bearing` overlapping the y ends of the head, thereby holding the bearing in place. j f

The base v2 is` provided `with an opening 22, which is substantially triangular in shape,y and engaged with the lcrotch 23 of the opening is a pin 24, which assumes a perpendicular position.' In fact the opening 22 is designed to receivevarious sizes of wrist pins, such' as 24, which receives the other end ofthe connecting rod. In fact by means of the wrist pin 24, the head of the connecting rod is positioned to assume a position concentric with the collar 12. In other words the',l wrist pin 24 insures centering the head 10, by adjusting the base 2 on lthe mandrel rods' 4. An `elongated-set..

bolt 25 is threaded through one .endlv of vthe base 2, until its end protrudesinto' theopening-22. The screw 25 terminates in afbearingen'd 261, which bea-rs upon the wrist :ping

the-opening 22, A in order: to insure holdin-g the wrist pinrigid. x

In order to separate the'vBabbitt metal (which constitutes the bearing for the conkto 'hold -thesame securely in the crotch of i necting; rod head) shims 27 preferably'made of brass(though may be constructed of cardboard, paper orother material) are arranged between the two halves of the-con.- necting'rod headin such wise as toengage with the pin 8 or bushing 28y in Figure f6;

The bolts which fasten the two--halves of the-head'togetherxpass through the shi'ms.l

t In Figure 6 thereis illustrated'a larger connecting rod head, and in order tofill up excessive or increasedfsize of the head a-suitabl'e bushing 28 is :fitted on the pin v8, and between which and the interior of the headthe Babbitt-metalenters.Vv Any num'- ber of bushings off thisl characterrnay be em'- various sizes of'connecting rodheads may be babbitted. n

The inventionv having been set forth, what is claimed is 1. In a ymandrel for babbittingconnectling rods, a'base provided with an upstanding pin passing through and spaced from the head ofthe connecting rod, collars fitted upon v`the pin and in Contact with the" opposite ends of the head ofthe connecting rod and providedwith' annular grooves upon their adjacent faces registering with the space between the pin andthe'bore'ofthe head, andan additional collar secured upon the extremity of the pinpand means? pass'- space between the pin andthe bore of the head, whereby vBabbitt metalfmaybe'poured thereinto'.` t y 2.' In Ia mandrelA for babbitting connecting rods, a base provided with an upstanding rod and provided with annular grooves upon their adjacent faces registering with the space between the pin and the bore of the head, and an additional collar secured upon the extremity of the pin, and means passing through the additional collar and bearing upon an adjacent collar, to jam the parts securely together, the additional collar and the collar adjacent thereto having filling openings communicating with the space between the pin and the bore of the head, whereby Babbitt metal may be poured thereinto, and means carried by the base and connected to the other end of the connecting rod to insure centering the head of the connecting rod on said pin.

In testimony whereof I hereunto affix my CHARLES ERICKSON, JR.

signature. 

